Casgliadau Arlein
Amgueddfa Cymru
Chwilio Uwch
Hook Colliery, plan
Plan of Hook Colliery district, workings in Timber vein. 6":1m, 1947. Plan prepared from Ordnance Geological Survey Sheets and from information supplied by Mr TW Harcourt Roberts, 13.10.47.
Nid yw sylwadau ar gael ar hyn o bryd. Ymddiheuriadau am yr anghyfleustra.